Continued exposure to a yellow sun would cause the level of her abilities to slowly increase.

Falsely believed that experiments performed by her father had left a small amount of sunstones implanted in her body, which seemed to appear when she is cut or bleeds. She thought that sunstones allowed her to maintain her super-powers under the red sun, as well as free those who are possessed by Phantom Zone ghosts. But was revealed that there was no sunstones, it was fake memories implanted by Darkseid. The crystals coming out of her body when she was cut or bleeding was caused by Kryptonite poisoning.

Kara is also a capable fighter having trained with the amazons. She is also somewhat capable as an actress, or in disguise. She has so far managed to play the roles of Flamebird, a high school girl, villainess, innocent young girl/super fighter, and a biker girl.

Weaknesses:She has a psychological aversion to long periods of time alone.

Kara's aura does not protect her from magic-based attacks. She is vulnerable to mind control, as was the case with Saturn Queen and Dark Angel both manipulating her into making mistakes and destroying relationships with other heroes such as Power Girl and Powerboy.

Kara is weaker or more prone to harm against magical creatures such as vampires & werewolf's.

Being a Kryptonian, Kryptonite has harmful effects on Kara. Green-K will cause Kryptonite poisoning and ultimately death.

Red Kryptonite has an unpredictable affect on Kryptonians. Examples of how Supergirl was affected by Red-K are as follows: changing into an adult Superwoman, splitting into two people, one half being Evil Kara, getting amnesia, and gaining the power to see through lead. However, the affects of exposure are only temporary, and if not fatal, will usually pass within one to 48 hours.

Note that it was Kryptonite poisoning that caused all the bad girl behavior Kara displayed in the Superman/Batman comic, and in the first two years of Supergirl Vol. 5. Kryptonite poisoning caused her to not remember her childhood, allowing Darkseid to implant fake memories to create the Dark Kara persona. Thus all the memories of her killing students and murdering her mother was fake memories. Darkseid knew she would never kill her cousin willingly, so was trying to trick her into thinking she was saving the Earth from Phantom Zone phantoms if she killed Superman. However, she loved her cousin Superman too much to ever kill him for any reason.

It was also Kryptonite poisoning combined with the fake kill Superman memories of Darkseid that was the secret reason for her violent behavior around other heroes. Examples include fighting the Teen Titans the first time they met; dislocating Superboy's jaw with a Super Punch; fighting the Outsiders; getting a tattoo; betraying the aliens in the bottled city of Kandor; not caring enough to even know her boyfriend's name; making out and then having a super fight with Powerboy; acting overly sexual and calling herself a crazy chick; All those out of character incidents and many more was caused by her Kryptonite poisoning; along with fake memories implanted by Darkseid; Lex Luthor using Kryptonite to bring out Dark Kara making the fake memories feel all the more real; Saturn Queen manipulating Supergirl's mind; Dark Angel manipulating Father Box, Powerboy, and Kara in an attempt to destroy her life.

Besides her weakness to Green-K. Another kind is also very dangerous. But luckily Gold Kryptonite is rare. And fortunately so since it can rob a Kryptonian of their super-powers for 30 minutes, leaving them vulnerable to death by normal means.

Blue Kryptonite has no effect on Supergirl, only on Bizarro imperfect duplicates.

Kryptonians are able to harm each other more easily since they seem to be able to bypass each other's auras.

Supergirl cannot see through lead.

Supergirl would eventually weaken and become powerless without replenishing her energy reserves with normal (yellow) sun radiation. Also would lose her powers under a green sun. And retains powers in an orange-sun system and under a hotter blue-white sun her powers would be increased.

Bio:Numerical ordering of the name "Supergirl" is highly problematic because of the many minor characters who have been known by that name, especially in the Golden and Silver Ages. For this reason, we will abandon the practice of "numbering" Supergirls in favor of a more precise nomenclature. The Loeb/Turner 2004 relaunch of Supergirl was similar in many ways to the Loeb 2001 relaunch of Superman. The recipe, it seemed, was to take a little something from each of the previous approaches to the character and blend it into a a simple, readily-coherent whole.

While fans of the post-Crisis Supergirls may criticize Supergirl of New Earth for being a little TOO basic, the initial appearances of this version of the character have proven to be wildly popular among the comics-buying public.

Like Supergirl of Earth 1, this Kara is definitely Kryptonian in origin, and, though there are characters in the DCU who have expressed doubt, appears to be definitely the cousin of Superman. Medical scans have been shown to occur which appear to confirm this hypothesis. Other things that indicate her similarity to Superman are her fear of Kryptonite, the basic similarity of her power-set, and a mathematical extrapolation of her age given the known distance to Krypton and the speed of the craft. In an entirely Loeb-created twist, though, the journey of her craft was said to have kept her in some form of suspended animation, making her apparent age "younger" than her actual age. She is in fact Superman's elder cousin, despite appearances and life experience. Though her identity as Superman's cousin seems all-but-absolutely-confirmed, her relationship with Superman has a bit more in common with Power Girl's relationship to Superman of Earth 2. She visibly bristles at Kal-El's attempts to mentor her and has been shown to find more in common with Themyscira than the Fortress of Solitude. Indeed, this version of Supergirl has much more to do with Batman and Wonder Woman than any other version of the character, and the "Big 3's" differing ideas on how best to help this Kara has been used to significant dramatic effect. Where Supergirl of the post-Crisis Earth was often depicted as a loner and Power Girl II has been a series of inconsistencies, Supergirl of New Earth has so far been able to act as a dramatically viable member of the larger DCU. So far, though, her lack of a secret identity has led all her interaction to be with other super heroes (or Amazons).

Her initial appearance had certain commonalities with the Loeb-influenced portrayal of the character "Kara" from the Season 3 finale of the TV program Smallville. Both that episode and issue #8 of Superman/Batman appear to have been produced around the same month in 2004, though it's an open question which was committed to paper first. Aside from the visual introduction (the first introduction to the comic Kara could be said to be an "alternative" storyboard for the way the TV Kara was introduced), the main thing the comic and TV Karas share is initial amnesia. This is having profound implications for the development of the character because it introduces an element of doubt about her true origins, and it has set up the framework for a final post-Crisis definition of the only Supergirl variant still active in the DCU: Power Girl. Consequently, the origins of Power Girl as explored in JSA Classified have profound implications for this version of Supergirl. Indeed, Supergirl (2005) #1 was at least as much about Power Girl as it was about Supergirl of New Earth. As of this writing, it's unclear what that relationship is, precisely, but it is at least possible that an explanation might, in part, hearken back to concepts last explored in the later stages of Peter David's Supergirl run.

Notes:As things have turned out, the return of a Kryptonian Supergirl was the first salvo in the rebirth of the Multiverse as chronicled in Infinite Crisis. She was the first clear sign that a new Earth — born of the positive existence of all the pre-Crisis Earths — was coming.

TPB - 'Teen Titans Spotlight: Cyborg'#2 - 'Rage Against the Machine, Part Two'#3 - 'Rage Against the Machine, Part Three'#4 - 'Rage Against the Machine, Part Four'#5 - 'Rage Against the Machine, Part Five'#6 - 'Rage Against the Machine, Part Six'

#2 - 'World of New Krypton, Part Two'#3 - 'World of New Krypton, Part Three'#5 - 'World of New Krypton, Part Five'#6 - 'World of New Krypton, Part Six: Codename: Patriot'#8 - 'World of New Krypton, Part Eight'